stats

On R versus SAS

October 6, 2011 | Luis

A short while ago there was a discussion on linkedin about the use of SAS versus R for the enterprise. I have thought a bit about the issue but, as I do not use Linkedin, I did not make any … Continue reading → [Read more...]

Linear regression with correlated data

October 5, 2011 | Luis

I started following the debate on differential minimum wage for youth (15-19 year old) and adults in New Zealand. Eric Crampton has written a nice series of blog posts, making the data from Statistics New Zealand available. I will use … Continue reading → [Read more...]

How many NYC restaurants get As on their health inspections?

August 15, 2011 | dan

Decision Science News is no stranger to misleading infographics in free New York newspapers. We could stop reading them entirely, but we find that playing "spot the infographic flaw" makes time fly on the subway. Recently we saw the above graphic in a paper called Metro. Can you spot the ... [Read more...]

The Stats Clinic

July 27, 2011 | richierocks

Here at HSL we have a lot of smart kinda-numerate people who have access to a lot of data. On a bad day, kinda-numerate includes myself, but in general I’m talking about scientists who have have done an introductory stats course, but not much else. When all you have ... [Read more...]

Resources for Learning R (from books to blogs)

May 17, 2011 | Adam.Hyland

The information below will be periodically updated at the folowing permanent link: http://www.backsidesmack.com/r-resources/ Searching for information on R sucks. Not only is the language name a letter of the alphabet (an ignominy it shares with C and some less well known languages), there is Pearson’s ... [Read more...]

Bootstrapping the Truncated Normal Distribution

March 2, 2011 | Adam.Hyland

Here’s a post generated from my own ignorance of statistics (as opposed to just being marred by it)! In Labor Economics we walked through something called the truncated normal distribution. Truncated distributions come up a lot in the sciences because … Continue reading →
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Null Confusion

January 25, 2011 | Adam.Hyland

Talking a bit with my friend Jarrod about math stats and econometrics, we both came to the conclusion that the standard presentation for basic inference is lacking. In an intro or intermediate applied statistics course you learn about first and … Continue reading →
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R: Attack of the hair-trigger bees?

January 12, 2011 | Matt Asher

In their book “Complex Adaptive Systems”, authors Miller and Page create a theoretic model for bee attacks, based on the real, flying, honey-making, photogenic stingers. Suppose the hive is threatened by some external creature. Some initial group of guard bees sense the danger and fly off to attack. As they ... [Read more...]

Area plots unmasked

December 15, 2010 | dan

RESULTS OF THE GREAT AREA PLOT QUIZ If you are the type of reader who remembers things from last week, you may remember the great area plot quiz we had running. This week, we are excited to announce that the results are in. The plot above shows answers to the ... [Read more...]

Navigate the Bermuda Triangle of Mediation Analysis

July 6, 2010 | dan

MYTHS AND TRUTHS ABOUT AN OFTEN-USED, LITTLE-UNDERSTOOD STATISTICAL PROCEDURE If you go to a consumer research conference, you will hear tales of how experiments have undergone particular statistical rites: the attainment of the elusive crossover interaction, the demonstration of full mediation through Baron and Kenny’s sacred procedure, and so ...
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